John decker



J. DECKER Clock Aiarm.

Patented March 5, I867.

C6 ar-ton t iggtates gaunt iliitfi JOHN DECKER, OF SPARTA, NEW JERSEY, ASSIGNOR TO HIMSELF AND CHARLES W. WABDWELL, OF BROOKLYN, NEW YORK.

Letters Patent No. 62,531, dated flfarclz 5, 1857; zzntczZazctZ M'arch 1, 1857.

IMPROVEMENT IN CLOCK ALARMS.

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TO ALL WHOM IT MAY CONCERN:

Be it known that I, JOHN DECKER, of Sparta, in the county of Sussex, and State of New Jersey, have invented a new and improved Clock Alarm; and I do hereby declare that the following is a full, clear, and exact description thereof, which will enable others skilled in the art to make and use the same, reference being had to the accompanying drawings, forming part of this specification, in which- Figure 1 is a side view of my invention.

Figure .1, a front view of the same.

'Figure 3, a front view of a clock with my invention applied to it, and the alarm sounded.

Similar letters of reference indicate like parts.

The object of this invention is to obtain a simple, cheap, and portable clock alarm, which may, whenever required, be applied to a clock by any one in a moment of time, and without any difiieulty whatever.

A represents a spring, of elliptical form, and constructed so that it may be fitted upon and made to grasp the post or arbor to which the minute handis attached, and thereby revolve with the minute hand. This spring has a rod, B, attached to it, which is bent in such a manner that a portion, a, will project out at right angles from the centre of the spring and post, said portion having a small cylinder, O, upon it, to which a cord, D, is attached by fitting on a pin, 6, projecting from the cylinder, the upper end of the cord being provided with a loop, 0, for this purpose. The cord D has a weight, E, attached to its lower end, the weight being of such a size that the spring A will be abundantly able to support it.

In applying or setting the alarm, the cord D is wound upon the cylinder C, so that there will ,be as many convolutions of the cord upon it as hours to intervene between the time of the application and the time designed for the alarm to be sounded; for instance, if the alarm is applied at twelve ocloelc, and it is desired that the alarm be sounded at six oclock, the cord is wound six times around the cylinder, and as the cord will be unwound from the cylinder, one convolution each hour, at the termination of the sixth hour all the cord will be unwound from it, and the loop 0 will drop from the pin 6. In case the weight E, (which is necessarily light or small,) should not in itself make sufficient noise in falling upon the floor, a pan or other suitable article may be placed underneath the 'clock to receive it, and adjusted in such a position on a chair or stool as to be knocked oil by the falling weight, and thereby produce the necessary sound. In case the dial of the clock has a glass front or cover, the latter is opened when the alarm is applied, and remains so until after the alarm has been sounded, when it may be closed. This invention may be constructed at a trifling cost, and applied by any one in a moment of time. It will prove to be extremely useful in those cases where a clock alarm is required only at certain times, not sufliciently often to warrant aperson purchasing an alarm clock.

Having thus described my invention, I claim as new, and desire to secure by Letters Patent- The spring with cylinder attached in connection with the cord and weight, all arranged so as to be capable of being applied to a clock, ,to operate substantially in the manner and for the purpose specified.

JOHN DECKER.

Witnesses:

R. OLaanv, D. Cousn, Jr; 

